miniDSP Flex HTx audio processor

The Flex HTx is the bigger brother of the Flex HT, targeting the need for a multichannel processor with HDMI ARC/eARC capabilities and stellar analog and USB audio capabilities. Within a single rack unit, we packed all the possible connectivity we could fit.

Eight-channel audio input is via analog audio (RCA and TRS), eARC linear PCM over HDMI¹, or USB Audio. Additional digital stereo input is supported over SPDIF and TOSLINK optical. Internally, we’ve provided a full suite of miniDSP’s flexible routing and audio processing features: bass management, parametric EQ, crossovers, advanced biquad programming and delay/gain adjustments. In addition, the miniDSP Flex HTx is software-upgradable with full-frequency Dirac Live®, the world’s premiere room correction system.

Continuing miniDSP’s focus on affordable high-performance audio, the Flex HTx features class-leading low noise and distortion figures. An OLED front panel display and volume control/encoder knob provides easy control.

The miniDSP Flex HTx is the perfect solution for a modern compact processor for home theater and multichannel sound.

REMINDER: Please note that the Flex HTx does not support bitstream (e.g. Dolby/DTS) decoding. The audio source must be able to output linear PCM (LPCM) for multichannel support over HDMI. 
 

Hardware Features

• Processor: 32-bit floating-point 400MHz Analog Devices SHARC DSP
• Multi-Core USB Audio processor (XMOS)
• HDMI EARC/ARC interface for multichannel audio in PCM. Note that Flex HTx doesn't support bistream format (Dolby/DTS encoded). 
• Optional upgrade to Dirac Live® 3.x Digital Room Correction, Multichannel (8ch) Full Range Room Correction (20~20kHz)
• Audiophile performance with very low noise floor and distortion (SNR @127dB(A), THD+N @ -120dB (0.0001%)
• Inputs: Stereo digital (SPDIF/Optical), Multichannel USB Audio streaming (up to 7.1)
• Outputs: 8 channels audio duplicated to unbalanced (RCA) 
• White/Black OLED front panel controller with IR control
• Control and configuration by miniDSP Device Console (DC)
• Rack mountable with removeable rack EARS

What's in the box?

• Digital Audio Processor - Flex HTx
• IR remote v2
• 12V univeral power supply (UK/EU/US/AU plugs)
• USB cable  
• Removeable Rack EARS (1RU)

Optional Items

• UMIK-1 or UMIK-2 Measurement microphone
• Dirac Live v3.x Upgrade for Multichannel (8ch) Full range correction (20~20kHz) / Must be selected in the shopping cart as an option. 
• Microphone tripod

NOTE: The UMIK-1/2 are measurement microphones approved by Dirac Research. Knowing the major effect a wrong calibration/measurement would have on the final results of Dirac Live tuning, we strongly recommend that you select a UMIK-1/2 microphone together with your platform for a plug&play experience leading to best results. Any issues related to 3rd party microphones such as ASIO/USB audio driver incompatibility/Latency problems or incorrect calibration process will not be under our support structure by our support team.

Audio Precision APX555 measurements

 Here are few measurements of the Flex HT (Digital IN, Unbalanced RCA out) for THD+N/SINAD/Dynamic Range with DRE enabled & THD+N

Application Notes

The Perfect Apple TV companion

The Apple TV 4k is the perfect streaming partner for the miniDSP Flex HT and Flex HTx. Combined with an eARC-enabled TV, a modern compact A/V system with Dirac Live®, the world's premiere room correction system, has never been easier to set up!

HDFury + miniDSP

HD Fury has a wide range of adaptors for HDMI interfacing that fits perfectly along with miniDSP's Flex HT/HTx series. Our team therefore decided to give you the option to package your Flex HT together with Arcana or Vrroom devices.

Multiway + Dirac Live

miniDSP's multichannel audio processors with Dirac Live room correction can implement advanced multiway active speakers. Any number of "ways" and speakers can be implemented up to the number of output channels. Check out our app note on how to get started!